What is "sachiko"

is a fairly common Japanese feminine given name that means "child of bliss." It also means "happiness" when it is written with the kanji characters 幸子. One common short form of the name is Sachi.

, is a Vocaloid 4 vocal. Her samples are based on Japanese female voice actress, actress, and one of the leading enka singers in Japan, Sachiko Kobayashi.